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.\"
.IX Title "GENDSA 1"
.TH GENDSA 1 2019-12-20 1.0.2u OpenSSL
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.nh
.SH NAME
openssl\-gendsa,
gendsa \- generate a DSA private key from a set of parameters
.SH SYNOPSIS
.IX Header "SYNOPSIS"
\&\fBopenssl\fR \fBgendsa\fR
[\fB\-out filename\fR]
[\fB\-aes128\fR]
[\fB\-aes192\fR]
[\fB\-aes256\fR]
[\fB\-camellia128\fR]
[\fB\-camellia192\fR]
[\fB\-camellia256\fR]
[\fB\-des\fR]
[\fB\-des3\fR]
[\fB\-idea\fR]
[\fB\-rand file(s)\fR]
[\fB\-engine id\fR]
[\fBparamfile\fR]
.SH DESCRIPTION
.IX Header "DESCRIPTION"
The \fBgendsa\fR command generates a DSA private key from a DSA parameter file
(which will be typically generated by the \fBopenssl dsaparam\fR command).
.SH OPTIONS
.IX Header "OPTIONS"
.IP \fB\-aes128|\-aes192|\-aes256|\-camellia128|\-camellia192|\-camellia256|\-des|\-des3|\-idea\fR 4
.IX Item "-aes128|-aes192|-aes256|-camellia128|-camellia192|-camellia256|-des|-des3|-idea"
These options encrypt the private key with specified
cipher before outputting it. A pass phrase is prompted for.
If none of these options is specified no encryption is used.
.IP "\fB\-rand file(s)\fR" 4
.IX Item "-rand file(s)"
a file or files containing random data used to seed the random number
generator, or an EGD socket (see \fBRAND_egd\fR\|(3)).
Multiple files can be specified separated by a OS-dependent character.
The separator is \fB;\fR for MS-Windows, \fB,\fR for OpenVMS, and \fB:\fR for
all others.
.IP "\fB\-engine id\fR" 4
.IX Item "-engine id"
specifying an engine (by its unique \fBid\fR string) will cause \fBgendsa\fR
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
.IP \fBparamfile\fR 4
.IX Item "paramfile"
This option specifies the DSA parameter file to use. The parameters in this
file determine the size of the private key. DSA parameters can be generated
and examined using the \fBopenssl dsaparam\fR command.
.SH NOTES
.IX Header "NOTES"
DSA key generation is little more than random number generation so it is
much quicker that RSA key generation for example.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBdsaparam\fR\|(1), \fBdsa\fR\|(1), \fBgenrsa\fR\|(1),
\&\fBrsa\fR\|(1)